shares of the computermaker jumped 15% in the last two days after a bloomberg report said that it is in buyout talks with a couple of private equity firms. the company founded in ceo michael dell's dorm room in texas in the '80s has been struggling lately as pc sales drop off. going private would allow dell to concentrate on new opportunities like mobile computing and other areas without seeking approval from shareholders. dell isn't commenting on the rumors. >>> america's economy could be poised for a comeback in 2013. i want to admit to being biased, not partisan, but biased against the stupidity of politicians who are willing to put your economy at risk. i am worried that these battles over the debt ceiling, these ridiculous sequester cuts that are coming up next, and the refusal to agree to a budget could derail an economic renaissance here in the united states. but investors don't seem all that worried at least for now. while some of you asked me whether you should wait until the debt and budget stuff is worked out to get back into the stock market, investors have put $19.8 bill